Mold-cooling device for line-casting machines



Nov. 18, 1930. s. E. sPERRY MOLD COOLING DEVICE FOR LINE CASTING MACHINES Filed OCT.. 5. 1929 1 VEvTo jan-lue] R BY ATTORNEY v i ssalvrnnnnV d d i 1 or nnooritzrir,d` NEW YORK, AVcoRPonnTro'N oF NEW YORK j refereed Nev, 1s, 1930,

STATES,

MOLD-Cochin@ :on-vien `rola LINE-ons'rrne ivrecnnns J- "f The present invention relates to improvements in line` casting machines such'as those employing a mold for casting typebars'or slugs against lines of matricesy'land the primaryobject is to provide' novel andA im?` l i proved means "for cooling the molds-used inggmachineshavebeen heretofore proposed7 "such Vfor, example asA by running Water r in machines off this "classfxvhereby increased speed` of operation'of the casting mechanism may be attained and the `type, `bars produced will: be solid inperfectionsf i t y f y. Devices `for cooling the moldsof line castthroug'h channels provided in the mold Whee'ltor` carrier adjacent to the pockets Vin Which .the'molds are Vset,and'it has also been proposed to directa-jet of air against a, portion `of the `mold or mold cap, but none of the" devices heretofore proposed has `fully met the demands of modernline casting machines, especially When molds `are used for casting large or heavy bodied type bars,

such molds absorbing and retaining considerable heat and ithaving becomenecessary inisome instances to reducefthe speedv whereby a blast of airis directed against the entire rear face of themold and through the cavity in' the mold tinWhich the `type barsV are cast, the relatively large area thus actedv onby` the air blast insuring sufficiently rapid removal of heat from the mold to enable the casting mechanismV to operate i rapidly and `to produce type bars Whichare solid and otherwise free from imperlfections, especially `or `free of'air uholes and other Fig.2 The p present invention*` provides means Awhen molds are usedfor feasting` large or heavy "bodied type bars, and it provides means,4r conveniently operableV Apreferably from the `front of thefmachine, `for throwing the cooling device intoand out of operation as desired, thus enabling the 'cooling deviceto be `operated `While a mold for the casting of the large or heavy :bodiedtype bars is Vin use and to loe-thrown foutent-opera! tion ,vvhena mold for the ncastingofV small orthm bodied type bars Which does not reff lquirelcooling, is innse. v i i Another object of theinvention ist() provide;` arnovel and improved cooling device ofulthisk kind'vvhich may be applied in-expenf sively `to line casting machines as usually constructed .d Without requiring extensive 1pfAfli?.NTI FFIC i i sPER-Rmos" Hora-grs, nnworim Assrelvon 4croi INTEBTYPE consonancia;

modifications or alterationsot' themachine,`

and to provide afcooling device of thiskind which will consume aminimum amount of power from the drivingfmotor of the ma#` chine. y d i" i `To these and other ends, the `invention consists in `certain. improvements and combinations and arrangements of parts al'l'as Will be hereinafter more ullydescribedthe features ofrnovelty being pointed out par- ,ticularly in the claims at the end of the speciiication. i y i v y Intthe accompanying drawingz-f f f y i l Fig; w1 is a `fragmentary.perspective view of portions fof aline casting machine shovvmg` the impwvedfcooling device applied l thereto; A Y y y y i l is aside elevation, partly in section, ofa portion of `the machine showing the cooling device thereon;

` Fig;V 3 represents a horizontal taken lon the line S-Bof` Fig. Q, loolringvin thedirection of the arrows; and Y y F'g. 4: is a fragmentary sectionalview,` "the section `being taken on the line 1g-4 of Fig@V and looking in the direction of the. arrows.V d

Similarparts are designated by the same referencecharacters in the different. figures.

section Cooling devices embodying the present invention are applicable generally to the molds of line casting machines of various kinds. 1n the present instance the cooling device in its preferred form is shown applied to a line casting machine of the class disclosed in S. Letters Patent No, 156,532 granted Sept. 16, 1890 to O. Mergenthaler, such machines as commonly constructed embodying` a column-like main frame 1 having horizontal crossbars 2 at the sides thereof, a mold wheel slide 3 which reciprocates in a forward and rearward direction in guides formed at one side of the frame 1, and a mold wheel a which is carried on the moldwheel slide and has pockets therein into which are fitted a suitable number of molds each comprising a body 5 and a cap (i, the mold slide and mold wheel being movable forwardly in the machine to bring the front face of the mold into contact with the line of matrices against which the type bar is to be cast, the mold having a slot or cavity 7 in which the body ofthe type bar is cast, all as is well known to those familiar with machines of this class'.

Also, in machines of this class, aftera type bar has been cast in the mold, the mold wheel is rotated to bring it `into vertical position where the type bar is ejected from themold by an ejector blade 8 which is guided to reciprocate in a forward'` and rearward direc` tion in guides formed in the mold wheel slide 3 after the slot or cavity 7 in the mold has been brought into alinement with the ejector blade 8. The ejector blade is guided at its forward end by all guide cap 9 which is usually formed separately from the mold wheel slide 3 and fixed thereto by screws and an ejector slide shield 10` is commonly attached to the mold wheel slide over the guide cap 9, the. rear side of the mold wheel beingv commonly recessed to accommodate 'the vforward end of the mold wheel. slide so that the guide cap 9 and shield 1() will lic in close proximity to the rear face of the mold while the latter is in ejecting' position, as will be clear from Fig. 3.

In applying the present invention to line casting machin-es of this class, the forward outer corner of the guide cap 9 is bevelled to form an inclined surface 11 which is directed substantially in line with the mold slot or cavity 7, and since the ejector slide shield 10 is spaced from the guide cap 9, a passageway 12 is formed between these parts which leads from the rear thereof to the rear face of the mold and the casting slot or cavity therein, and means is provided for supplying 'aV lblast of air to this passage so that the air will iiow over substantially the entire rear face of the mold, including the body and cap thereof, and some of the air will How forwardly through the mold slot or cavity 7 after the type bar east therein hasl been ejected'.

The means preferably employed for supplying the air blast in the manner described consists of an air blower' which comprises a revoluble bladed runner 13, a circular housing 111 in which the runner operates, the housing having inlets 15 ina side thereof through which air enters the housing to reach the runner, and a discharge conduit 16 leads from the runner housing and terminates in a vertically elongated and horizontallyconstricted mouth 17 the vertical length of which approximately equals the length of the mold, the mouth 17 being off-set to brin g it into a position where it will register with the rear end of the passage 12 which extends for 'ardly between'the guide cap 9 and shield 1l), so that the air blast produced by the rotation of the runner will be. conducted through the conduit 16 and discharged at high velocity and in the form of a sheet through the flared mouth 17, this sheet of air being received directly by theair passage 12 and conducted thereby to the rear face of the mold. rlhe air passage 12 flares toward the mold, due to the bevel 11, so that a considerable portion of the rear face of the mold and also the casting slot or cavity therein will be exposed directly to the air flowing forwardly in the passage 12, but since a clearance space is left between the rear face of the mold and the forward end of the mold wheel slide 3, the guide cap 9 and the shield 10, outlet passageways will be formed at these points which will permit air from the' passage 12 to reach t-he rest of the rear surface of the mold body and cap, so that substantially the entire rear face of the mold is exposed to the cooling eifect of the air blast, and after ejection of the type bar from the mold, part of the air blast will How through the mold io cool it interiorly.

The air blower may be conveniently mounted in line casting` machines as commonly constructed by forming its housing or casing with a lower flange 18 to bear against the inner side of one oi' the cross members 2 of the main frame and formino; the blower housing with an arm 19 which extends upwardly therefrom andis formed with hook-like portion 2O adapted to fit over the upper edge of anadjacent cross member 2 of the main frame and to engage the outer side of this cross member, screws 21 beingextended through the flange 18 and secured to the respective frame cross member 2 to secure the flange 18 to the machine frame and a screw 22 being threaded in the upper arm 19 and'- arranged to bear against the inner side of the respective frame cross member 2 so that when this screw is turned in the proper direction, it will draw the outer end of the hook-like portion into engagement with the outer side of the respective frame cross member 2, the blower being thus rigidly to increase the suction of air into the blower,

is revolved in the proper direction and at appropriate speed by lashaft 23 which is connected to the runner shaft by a` universal joint 23a, the runner shaft being journalledv Y in bearings 24 in the blower housing, so that i5 precise positioningof the blower housing in the frame of the machine isrendered 'unneces j sary, 'lhefother end ofthe shaft 23'isjournalled in a bearing 2 5 mounted in lixed position on the opposite side `of the main frame l, and it has a belt pulley 26 fit/fled to it by means of which it is:` driven. Y

The blower is driven during the operation of the machine preferably by belts from the vmain belt pulley 27", commonly vused onmachines of this class. VIn such machines, the

"pulley 27 is connected to a beltpulley 28 fixed ona so called intermediate-shaft 29, by a belt 30, and the blower is driven from an addibeing connected to the driving `tional belt'pulley3l which may be fixed to"v the shaft 29, this pulley being connected by a beltv13l` to a belt pulley 32 which is hXed to f a larger belt pulley 33, and the belt pulley 33 pulley 26 on the blower shaft 23 by a belt 34.

During theoperationof the line casting machine, the belt pulley 27 runs continuously. However, means is provided for interrupting `the operation of the blower, if desired during the casting of relatively thin or small bodied type bars which may not require cooling of the mold. Preferably, this is accomplished by mounting the belt pulleys 32 and i 33 on the rear end of a lever 35,7this lever being pivoted to rock on the bearing 25 and about the axis of the shaft 23, the lever eX-V tendingrforwardly to the front of the machine where vit is provided with a handle 36 by means of which it may be opei'atedfrom the front ofthe machine. By somounting will be moved away from the belt pulley 31 the belt pulleys 32 and 33, the beltpulley 32 Y when the lever 35 is swung upwardly or into the full line position shownin Fig. 2, thereby tensioning the connecting belt 1 31and caus ing the blower to be driven from the shaft 2 9, and a downward swing of the lever 35 toward or into the dotted line position will move the belt pulley 32 toward the pulley 3 1,

, thereby producing suilicientslack in the connecting belt 131 to interrupt the drive of the blower. Thelever 35 is preferably provi-ded with a spring actuated plunger 37 the nose of which is adapted to seat in either of two properly located recesses 38 in the adjacent `side of the frame of the machine so that the V of itsl positions, according to whether lever will be yieldinglyretained ineither blower is in "or out of operation.

y Vhile the mold cooling de tion during the operation of thejline casting machine, the air blast induced by the rota* tion ofthe fanor runner of the blower is projected from the "flared discharge mouth of the blower into the passage provided in the forward end of the moldvwheel slide, and

` this passage conlines V the air current and directs `it against the rear face of the mold and into the moldwslot thus causing heat accuinwA lated in the niolddue to the repeated casting `of type bars therein7 to be vcarried away from themold, thereby maintaining the mold suf# liciently cool to insurethe casting of solid type bars free of air holes or other imperfecthe i vice is in operay,

tions, especially when molds for casting large or thick-bodied type bars are. in use. 5 Since y the mold wheel and its slide shift `together forwardly and rearwardly in; machines of this classin order to carry the moldto `and from casting relation with the mat-ria( line,

the clearance`` spacebetween the forward end ,i

of the mold wheel slidefand the rear face of the mold will not varyso thatthe proper Vdistribution ofthe air to the rear facecfthe mold by the' air conningand directing passage `or channel `at theforward end of the mold wheel slide is not interfered with,' `al` though the discharge mouthpiece ofthe blow#A er will be spaced suliiciently in' rear of the guarden the mold vvheel s`lide toV avoid 'strik-f ing itwhen said slideis retracted.

By `modifying theusual mold slide of *the` machine as hereinbefore described so that; it may be* used as a means for `forming a channel to confine the air and conduct it to the mold, the constructionis simplified and renderedvreadily applicable to line casting inachines as vheretofore" commonly constructed,

Vand by mounting Athe air blower on the fra inc of the machine as hereinbefore lescribed, the

application of this part ofthe mold cooling" device to suoli machines may be accomplished with facility. The preferred drivingmeans for the blower shown is aleo simple and eiiicientfit taking its power from shaftsfal! ready used in machines of this class, andit providesv simple means for rendering- `the mold cooling device inactive whenmolds for casting small or thin-bodied typebars are in l. `Iii a line casting machine provided with a `cavity for` castingtype bars having a mold,

therein, an air blower having Aa discharge mouth opposite to the rear face `of the mold for directinga blast ofair against the rear face `of the Amold substantiallyin the plane of the mold cavity. i

2. In aline casting machine `having amold provided with an elongated cavityfor casting a type bar therein, an air blower having i au' Cil lll

a discharge mouth which is dared, in the direction oi? the length oi said meld cavity and is opposite thereto and to the rear 'face of the n'iold.

3. ln a line casting machine having a mold, ejector guiding means having a passage therein lead in4 to the rear face oi the mold, and means for inducing a low of air through said passage toward the mold.

Ll. In a line casting machine having` a mold provided with a slot for the casting` ot a type bar therein, and c iccting nieans at the rear of the mold ior ejecting type bars cast in said slot. ejector guiding' means iiorinii j an air passage leading' to the reni' tace of the mold and slot therein. and an air blower `'or forcing air thi-i' gli said passage and slot.

line casting machine con'iprisiiig a niold wheel carrying a inold having a slot'fol the casting et a type bar therein, a mold wiicel slide carrying` means ior ejecting' type bars from the mold slot, said slide having a portion adjacent to the rear face of the mold provided with a passage which is elongated in the direction ot' the length of the mold and leads to the rear tace thereof and the slot therein, and means for forcing air through sain passage toward the mold.

6. ln a line casting machine compris-ine] a nold wheel carrying a mold vfor casting type ars and a mold wheel slide Carrying ineans for ejectingv type bars from the mold, an air blower having' means for mountin` it opposite to the mold wheel slide, said blower having a conduit leading therefrom and provided with a discharge mouth which is flared in the direction of the length oi? the mold and is opposite to the rear face thereof.

7. In a line casting machine having a mold 'For casting type bars, an air blower tor air cooling the mold, driving` means for the blower embodying; means for connecting;l and disconnecting; it with respect to a souree of power, and a controlling;1 member ext to the front of the machine and acting* .fl driving means to set the blower into and out of operation.

In a line casting' machine having; a traine, a mold wheel carrying a mold i'er casting type bers, a. slide caruving` the mold wheel and Lguided to reciprocate on the traine, and an air blower havingV an air discharge month at one side ot said slide and in rear ot the mold, said blower embodying a housing having portions engageable with the 'traine at the side thereof opposite to said slide. and means for securing` said portions ot' the blower housing` to the iframe.

9. ln a line casting,T machine havin e' a mold for casting` type bars, an air blower having a revolnbie runner and a discharge mouth for directing` air to the mold to cool it, and driving means for t-h-e blower comprising a driving pulley on the runner shaft, a lever pivoted on the runner shaft, a pulley carried by said lever and beltedto the pulley on the runner shaft, and a. relatively liXed-axis dri v ing pulley belted to the pulley on said lever,

the lever having an operating portion extending to the ront of the machine and the le- 

